Chief Superintendent Phil Ward said police had found Miss Squire’s mobile phone at her home, adding: “We now know Libby arrived on Wellesley Avenue, her home address, around 11.29, although it’s not believed she entered the property.
“On searching the address, we did discover her mobile phone which, despite analysis, has not provided any further insight as to where she may be or her movements that night.”
Miss squire was then seen on CCTV at 11.40pm in a distressed state, prompting a motorist driving past to stop and help her.
Police believe she remained in the area until 12.09am.
Chief Supt Ward said: “While her location is not yet known, this does not mean she has come to harm, but we must carry out a thorough investigation and explore all possibilities.”
He added: “While the investigation has been treated as a missing person inquiry, we have always, and will continue to, keep an open mind as to the circumstances surrounding Libby’s disappearance.”
Miss squire’s family had previously said that the student’s disappearance is “very out of character”, and that she is a “very thoughtful and caring young woman who puts others before herself”.
This evening, officers continued to search the areas close to where Miss Squire was last seen.